Preparation bowl



FIG. 1 is a perspective view of a preparation bowl according to our new design;

FIG. 2 is a front elevation view thereof, the rear view being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof; and,

FIG. 6 is a bottom plan view thereof. 

We claim the ornamental design for a preparation bowl, as shown and described. 